Reminder: There will be some disruption to bus services operated by Ritchies Murphy Transport Solutions Limited tomorrow due to industrial action by First Union members. Make sure you check our website for affected services and plan ahead: https://t.co/PnePUsRfofpic.twitter.com/QIhKzhEMWl

First Union, which represented the workers, said drivers at Ritchies Murphy have unacceptable employment conditions.

No-one from Ritchies Murphy was immediately available to comment.

Ritchies Murphy Transport is an affiliate company of Ritchies Transport who has previously requested to bring in 200 migrant workers due to claims there was a worker shortage, a statement from First Union reads.